Combination bailing and cooling water pump



Sept. 15, 1959 c so ETAL 2,903,991

COMBINATION BAILING AND COOLING WATER PUMP Filed Jan. 11, 1954 2 Sheets-Sheet 1 I K I I 80 i 26 H ll v i I l l I I F1 5: a j z I I I I V /0a. a g I l l INVENTOR.

U B/rr'wv 61 x45 E Jm/r/i/ m/vcxz lrrokmey Sept. 15, 1959 B. CARLSON ETAI- 2,903,991

COMBINATION BAILING AND COOLING WATER PUMP Filed Jan. 11, 1954 2 Sheets-Sheet 2 III 77/I/l/ 1 I I I 11 (IlIIIIIII/III/[ll III/III IIIIII/ll/I III, I I I] INVENTOR. flrRa/v 6'ARL50I/ United States Patent COMBINATION BAILING AND COOLING WATER PUNIP' Byron Carlson and John H. Klancke, Minneapolis, Minn.,

assignors, by mesne assignments, to- McCulloch Corporation, Minneapolis, Minn., a corporation, of Wiscousin I Application January 11, 1954, Serial No. 403,421

2 Claims. (Cl. 115-17) This invention relates to an outboard motor, and par- 'ticularly to a pumping means used With said motor. Modern outboard motors commonly have a cooling water system for a motor or engine proper and also commonly have a pump for supplying Water to this system. It has been found desirable to have a second pump which may be used for other pumping operations, such as for removing or bailing water from the boat with which said outboard motor is used.

It is an object of this invention to provide an outboard motor having a cooling water pump preferably driven from the main drive shaft of the motor, together with a second pump disposed adjacent said first mentioned pump and also preferably driven from said drive shaft.

It is another object of the invention to provide an outboard motor structure including a pump with a cooling water system and also providing a second pump disposed adjacent said first mentioned pump, said pumps comprising casings secured to the drive shaft housing by a common means.

It is also an object of this invention to provide an outboard motor structure including a cooling water pump having a casing supported in the drive shaft housing of said motor structure so as to receive water from the body of water in which the outboard motor is operating, a

second pump having a casing adjacent to said first men- I and having lugs respectively alined with said lugs, a plate extending over said'ca'sing, a second casing supported on said plate and having lugsth'ereon vertically alined with 'said first mentioned lugs, a cover plate for said second casing having lugs vertically al'ined with the lugs on said second casing, said second casing having a bottom wall,

apertures of small di'rnension'extending through said bottom wall and plate respectively, a chamber in each of said casings, said apertures affording communication between said chambers, a drive shaft extending through said casings and cover member, and an impeller in each of said chambers secured to said drive shaft.

These and other objects and advantages of the invention will be fully set forth in the following description made in connection with the accompanying drawings in which like reference characters refer to similar parts throughout the several views and in which:

Fig. l is a vertical section taken through the drive shaft housing of an outboard motor and through the diameter of said drive shaft;

Fig. 2 is a view in vertical section taken through said 'e ICC 2 housing in a plane spaced from that on which Fig. 1 is taken;

Fig. 3 is a vertical transverse section through the drive shaft housing of an outboard motor;

Fig. 4 is a view in side elevation of a pump assembly used;

Fig. 5 is a horizontal section taken on line 5-5 of Fig. 4, as indicated by the arrows;

Fig. 6 is a horizontal section taken on line 66 of Fig. 4', as indicated by the arrows;

Fig. 7 is a view showing a bailing device for a boat secured to said pump assembly.

Referring to the drawings, a housing 10 is shown which constitutes the drive shaft and exhaust housing of a modern outboard motor. Housing 10 has thereonat its inner side and somewhat adjacent the top thereof a plurality of circumferentially spaced lugs 10a. A casing 11 is provided, the same having a plurality of circumferentially spaced apertured lugs 11a projecting therefrom, lugs 11a being disposed so that they rest upon and are vertically alined with the lugs 10a. Casing 11 has 2. depending hub 11b and a drive shaft 12' extends through hub 11b and through casing 11. Casing 11 has therein a chamber 110, and while the shape of this chamber might vary, in the embodiment of the invention illustrated, it is shown. as cylindrical. Chamber llc has a bottom wall and an inlet opening 11d is provided in said Wall. Inlet opening 11d asusual communicates with the water in which the outboard motor is operated. Chamber has an outlet opening through the side thereof forming the end of a discharge passage 11c which is disposed in a projection portion 11] of casing .11. Said outlet passage 11'e extends upwardly through a boss 11g formed on portion 11f and is connected to the cooling water system. Casing He has. an open top and a rather thin plate 14 extends over the top thereof and forms the top of chamber 110. Plate 14 has spaced apertured lugs 14b thereon constructed to aline vertically with lugs 11a. Plate 14 has an aperture 14a of rather small dimension extending therethrough. A second casing 16 surrounds shaft 12 and the same has a plurality of spaced apertured lugs 16a disposed to aline vertically with the lugs 10a and 11a. Casing 16 has a chamber 16b therein which as illustrated is cylindrical. Casing 16 has a bottom wall forming the bottom of chamber 16b and the same has an aperture 16d of small dimension therethro'u'gh. Chamber 16b has an outlet opening 16:: extending through the side wall thereof through a short boss 16 thereon. Chamber 16b" has an open upper end and a cover plate 18 is provided extending over chamber 16b and casing 16. Cover plate 18 has spaced apertured lugs 18a thereon which aline with the, lugs 16a of casing 16. Packing material 19' is shown disposed in grooves incasings 11 and 16 and engaging the top and bottom of plate 14' and the bottom of cover 18 respectively. Impellers 2'0 and 22 of the form shown in Figs. 5 and 6 are disposed respectively in chambers 11c and 16b and are secured to shaft 12. Said impellers have hub portions 20:: and 22a respectively from which extend a multiplicity of vanes 20b and 22b respectively. While vanes 20b and 221) could be made of various materials, in practice these vanes have been made of flexible resilient material such as rubber or a rubber-like material. The center of shaft 12 is spaced a short distance from the center of the chambers 11c and 16b so that said chambets are thus eccentric to said shaft 12. Cover plate 18 has a portion 18b having a passage 18c therethrough which communicates with an inlet passage 18d of chamber 16b. The cover plate 18 and casings 16 and 11 are secured together by a plurality of bolts 23 which extend through the lugs on plate 18 and through the lugs 11a, 14a and 16a and into the lugs 10a. In practice three r 3 threaded boltsare used and one stud is used with the other lugs.

A conduit 24 extends from the inlet passage 18b of chamber 16b-and is connected to a bailing member 25; The bailing member 25 comprises a casing oblong in plan having a chamber therein with which conduit 24 communicates, said chamber having a bottom wall provided .with a plurality of slots or openings 25a. The outlet passage 16e which extends through the casing 16 will. have a conduit 26 connected thereto which will extend through the wall of the housing and discharge into the water in which the boat is disposed. The inlet passage of chamber 110 will be connected as usual to the water in which the boat is disposed and the outlet passage of chamber 11c will be connected to the cooling water system of themotorjv In operation, shaft 12 will be driven and both impellers and 22 will be rotated. Rotation of these impellers moves the water from the inlet passage to the outlet passage in a well known manner. As stated, the pump comprising casing 11 and impeller 20 will supply water to theengine cooling water system. The pump comprising impeller 22 and casing 16 will be used for auxiliary purposes, such as bailing water from the boat with which the motor is used. The member will be placed in the bottom of the boat and in the water which is to be" removed and this water will then be drawn through conduit '24 into chamber 16b and will be discharged .through the discharge passage 16e and out through the housing 10 and will drop into the body of water in which the boat is disposed. The, apertures 14a and 16d afiord communication between the chambers 11c and 16b. When the-pump having impeller 22 is not in use, Water can then pass through these apertures into chamber 16b and will then move out through the discharge passage 18c. This water will of course move very slowly through the apertures 14a and 16d and will not materially affect the operation of the pump. having impeller 20. This water moving through said apertures will keep the pump having impeller 22 suitably lubricated so that the walls thereof will not be dry.

From the above description it will be seen that applicants have provided a simple and very efiicient arrangement of pumps for an outboard motor, one of which can be used for auxiliary purposes, such as for bailing out the boat with which the motor is used. The pump structures are very conveniently disposed in the drive shaft housing and are arranged to be easily supported therein and secured thereto. The pumps have a common drive from the drive shaft to the motor. A very novel and convenient structure has thus been provided. The device has been amply demonstrated in actual practice, found to be very successful and efiicient and is being commercially produced.

It will of course be understood that various changes may be made in the form, details, arrangement and pro portions of the parts, without departing from the scope of applicants invention, which, generally stated, consists in a device capable of carrying out the objects above set forth, in the parts and combinations of parts disclosed and defined in the appended claims.

What is claimed is:

1. An outboard motor structure having in combination, a drive shaft and exhaust housing, a drive shaft disposed in said housing, said housing having a plurality of spaced lugs disposed at the inner side thereof, a casing having lugs supported on saidl'ugs and having a chamber therein, said chamber having inlet and outlet openings and an open upper end, a plate separate from said casing extending over and forming a top for said chamber and casing and having an aperture of small dimension therethrough, a second casing having lugs supported on the lugs of said first mentioned casing and having a second chamber therein open at its top, said second chamber having inlet and outlet openings, said second casing having a bottom wall forming the bottom of said second chamber and having an aperture of small dimension therethrough, a cover member having lugs resting on the lugs of. said second casing, means extending through all of said lugs and parallel to said shaft for securing said casings and cover together and securing the same to said .first mentioned lugs, and an impeller disposed in each of said chambers and secured to said shaft.

2. A- bailing member in connection with an outboard motor having in combination, an outboard motor housing having supporting lugs therein, an enclosed casing disposed in said housing supported on said lugs, a second enclosed casing disposed in said housing and supported on-said first casing, a chamber in each of said casings, restricted passages respectively in adjacent sides of said casing for the direct passage of water between said chambers, a drive shaft extending through said housing and said chambers, an impeller in each of said chambers connected to said drive shaft, one of said casings having aninlet for connection with the water in which said motor is placed and having an outlet for the exhaust of said water through the cooling system of said motor, a

bailing member, said other casing having an inlet connected to said bailing member and having an outlet exhausting to the atmosphere, and a common means for 'removably securing said casings in operating position in said impeller in said other casing.

References Cited in the file of this patent UNITED STATES PATENTS 1,528,449 Meyer Mar. 3, 1925 1,586,806 Hohagen June 1, 1926 1,680,906 Neumann Aug. 14, 1928 1,696,635 Jennings Dec. 25, 1928 2,223,592 Barton et al. Dec. 10, 1940 2,466,440 Kiekhaefer Apr. 5, 1949 2,604,867 Frye July 29, 1952 2,610,602 Schenavar Sept. 16, 1952 FOREIGN PATENTS 355,311 France June 17, 1905 

